You can now use your own custom CloudFormation templates in Weaver, along with the (now deprecated) Atlassian provided templates.
Configuring your template repository
You can host your repository anywhere, so long as it can be accessed over SSH by the Weaver server.
Repositories should contain the following nested folders:
Template files should be YAML (JSON is not supported).
Filenames should contain the product name, and end in .yaml, eg 'MyConfluenceTemplate.yaml'.
Clone templates should specify 'Clone' in the filename, eg 'MyConfluenceCloneTemplate.yaml'.